adding note in readme to direct additions upstream to debian
adding note in readme to direct additions upstream to debian

xronos-i-am/countries,thieunus/countries,JuanitoFatas/countries,GUI/countries,burningpony/countries,tenforwardconsulting/countries,vcita/countries,aminin/countries,touristly/countries,fabn/countries,adriagalin/countries,charitywater/countries,ohenrik/countries,hexorx/countries,jeffrey410469/countries